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Remote Sensing Of Vegetation Characteristics And Spatial Analysis Of Pyric Herbivory In A Tallgrass Prairie
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Book Synopsis Remote Sensing of Vegetation Characteristics and Spatial Analysis of Pyric Herbivory in a Tallgrass Prairie by : Bohua Ling
Download or read book Remote Sensing of Vegetation Characteristics and Spatial Analysis of Pyric Herbivory in a Tallgrass Prairie written by Bohua Ling and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Quantitative remote sensing provides an effective way of estimating and mapping vegetation characteristics over an extensive area. The spatially explicit distribution of canopy vegetative properties from remote sensing imagery can be further used for studies of spatial patterns and processes in grassland systems. My research focused on remote sensing of grassland vegetation characteristics and its applications to spatial analysis of grassland dynamics involving interactions between pyric herbivory and vegetation heterogeneity. In remote sensing of vegetation characteristics, (1) I estimated the foliar pigments and nutritional elements at the leaf level using hyperspectral data. The foliar pigments, chlorophylls and carotenoids, were retrieved by inverting the physical radiative transfer model, PROSPECT. The nutritional elements were modeled empirically using partial least squares (PLS) regression. Correlations were found between the leaf pigments and nutritional elements. This provided insight into the use of pigment-related vegetation indices as a proxy of the plant nutritional quality. (2) At the canopy level, I assessed the use of the broadband vegetation indices, normalized difference vegetation index (NDVI) and green-red vegetation index (GRVI), in detecting vegetation quantity (LAI) and quality (leaf and canopy chlorophyll concentrations). The relationships between vegetation indices and vegetation characteristics were examined in the physical model, PROSAIL, and validated by a field dataset collected from a tallgrass prairie. NDVI showed high correlations with LAI and canopy chlorophylls. GRVI performed even better than NDVI in estimating LAI. A new index GNVI (green-red normalized vegetation index) that combined NDVI and GRVI was proposed to extract leaf chlorophyll concentration. These findings showed the potential of using broadband vegetation indices from multispectral remote sensors to monitor vegetation quantity and quality over a wide spatial extent. In the spatial analysis, I examined interactions between pyric herbivory and grassland heterogeneity at multiple scales from the remote sensing imagery. (3) At a coarse, watershed level, I evaluated effects of fire and large herbivores on the spatial distribution of canopy nitrogen. It was found that the interactive effects of fire and ungulate grazing were present in the watersheds burnt in spring, where a high level of ungulate grazing reduced vegetation density, but promoted canopy heterogeneity. Two grazer species, bison and cattle, were compared. Differences in the vegetation canopy between sites with bison and cattle were observed, which may be related to differences in the grazing intensity, forage behavior and habitat selection between the two grazer species. (4) At a fine, patch level (30 m), bison forage pattern was examined associated with canopy nitrogen heterogeneity. Bison preference for patches with high canopy nitrogen was evident in May. Later in June - September, bison tended to avoid sites with high canopy nitrogen. Vegetation heterogeneity showed significant influences on bison habitat selection in June. Bison preferred sites with low variance in canopy nitrogen, where the patch types were highly aggregated and equitably proportioned.
Book Synopsis Remote Sensing and Spatial Analysis Applications in Vegetation and Landscape Ecology by :
Download or read book Remote Sensing and Spatial Analysis Applications in Vegetation and Landscape Ecology written by and published by . This book was released on 2001 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Rangeland Systems by : David D. Briske
Download or read book Rangeland Systems written by David D. Briske and published by Springer. This book was released on 2017-04-12 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY-NC 2.5 license. This book provides an unprecedented synthesis of the current status of scientific and management knowledge regarding global rangelands and the major challenges that confront them. It has been organized around three major themes. The first summarizes the conceptual advances that have occurred in the rangeland profession. The second addresses the implications of these conceptual advances to management and policy. The third assesses several major challenges confronting global rangelands in the 21st century. This book will compliment applied range management textbooks by describing the conceptual foundation on which the rangeland profession is based. It has been written to be accessible to a broad audience, including ecosystem managers, educators, students and policy makers. The content is founded on the collective experience, knowledge and commitment of 80 authors who have worked in rangelands throughout the world. Their collective contributions indicate that a more comprehensive framework is necessary to address the complex challenges confronting global rangelands. Rangelands represent adaptive social-ecological systems, in which societal values, organizations and capacities are of equal importance to, and interact with, those of ecological processes. A more comprehensive framework for rangeland systems may enable management agencies, and educational, research and policy making organizations to more effectively assess complex problems and develop appropriate solutions.
Book Synopsis Invasive Species in a Changing World by :
Download or read book Invasive Species in a Changing World written by and published by Island Press. This book was released on with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Invasive Species in a Changing World provides readers with the background and knowledge they need to begin developing strategies to combat the invasive species problem, and it is essential reading for anyone concerned with the impact of invasive species on ecosystem health and functioning."--BOOK JACKET.
Book Synopsis Landscape Heterogeneity and Disturbance by : Monica G. Turner
Download or read book Landscape Heterogeneity and Disturbance written by Monica G. Turner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Landscape pattern is generated by a variety of processes, including disturbances. In turn, the heterogeneity of the landscape may enhance or retard the spread of disturbance. The complex relationship between landscape pattern and disturbance is the subject of this book. It is designed to present an illustrative analysis of the topic, presenting the perspectives of several different disciplines. The book includes conceptual considerations, empirical studies, and management examples. Important features include: hypotheses about the spread of disturbance and the effects of scale changes in landscape studies; the multidisciplinary approach; and the explicit focus on the landscape level. The intended audience comprises graduate students, academics, and professionals interested in landscape ecology. The reader will receive a state-of-the-art treatment of a current topic in landscape ecology.
Book Synopsis Habitat Fragmentation and Landscape Change by : David B. Lindenmayer
Download or read book Habitat Fragmentation and Landscape Change written by David B. Lindenmayer and published by Island Press. This book was released on 2013-02-22 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Habitat loss and degradation that comes as a result of human activity is the single biggest threat to biodiversity in the world today. Habitat Fragmentation and Landscape Change is a groundbreaking work that brings together a wealth of information from a wide range of sources to define the ecological problems caused by landscape change and to highlight the relationships among landscape change, habitat fragmentation, and biodiversity conservation. The book: synthesizes a large body of information from the scientific literature considers key theoretical principles for examining and predicting effects examines the range of effects that can arise explores ways of mitigating impacts reviews approaches to studying the problem discusses knowledge gaps and future areas for research and management Habitat Fragmentation and Landscape Change offers a unique mix of theoretical and practical information, outlining general principles and approaches and illustrating those principles with case studies from around the world. It represents a definitive overview and synthesis on the full range of topics that fall under the widely used but often vaguely defined term "habitat fragmentation."
Book Synopsis Yellowstone Bison by : Patrick James White
Download or read book Yellowstone Bison written by Patrick James White and published by . This book was released on 2015-05 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Post-Fire Management and Restoration of Southern European Forests by : Francisco Moreira
Download or read book Post-Fire Management and Restoration of Southern European Forests written by Francisco Moreira and published by Springer Science & Business Media. This book was released on 2011-11-02 with total page 333 pages. Available in PDF, EPUB and Kindle. Book excerpt: In spite of all the efforts made in fire prevention and suppression, every year about 45 000 forest fires occur in Europe, burning ca. 0.5 million hectares of forests and other rural lands. The management of these burned forests has been given much less attention than fire prevention or fire suppression issues, but the post-fire management of burned areas raises strong concerns (economic and social impacts, soil erosion and water quality, biodiversity loss, forest restoration). Although there are a few publications which address post-fire management, the focus of these has been either on general approaches to restoration or specific topics such as preventing post-fire soil erosion. This book is about the post-fire management of fire-prone forest types in southern Europe. It provides the first comprehensive overview of the topic, ranging from stand-level to landscape-level management, and from emergency actions to long-term restoration approaches.
Book Synopsis The Ecology of Browsing and Grazing by : Iain J. Gordon
Download or read book The Ecology of Browsing and Grazing written by Iain J. Gordon and published by Springer Science & Business Media. This book was released on 2007-09-14 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume investigates how large herbivores not only influence the structure and distribution of the vegetation, but also affect nutrient flows and the responses of associated fauna. The mechanisms and processes underlying the herbivores' behavior, distribution, movement and direct impact on the vegetation are discussed in detail. It is shown that an understanding of plant/animal interactions can inform the management of large herbivores to integrate production and conservation in terrestrial systems.
Book Synopsis Megaherbivores by : R. Norman Owen-Smith
Download or read book Megaherbivores written by R. Norman Owen-Smith and published by Cambridge University Press. This book was released on 1988 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: An account of the limitations and advantages conferred by large body size.
Book Synopsis Fire in North American Tallgrass Prairies by : Scott L. Collins
Download or read book Fire in North American Tallgrass Prairies written by Scott L. Collins and published by University of Oklahoma Press. This book was released on 1990 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on papers presented at a 1987 symposium, "Fire in North American Grasslands," cosponsored by the Ecological Society of America and the Botanical Society of America, this book represents an important contribution to key unanswered questions concerning the role of fire in grassland ecosystems: How often did fires occur in the past? Were they primarily natural or caused by humans? At what time of year did grasslands normally burn? How should fire be used as a management tool? What constitutes a proper prescribed burning regime both with and without grazing?
Book Synopsis Interactions between Soil Particles and Microorganisms by : Pan Ming Huang
Download or read book Interactions between Soil Particles and Microorganisms written by Pan Ming Huang and published by John Wiley & Sons. This book was released on 2002-03-12 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wechselwirkungen von Mineralien, organischen Verbindungen und Mikroorganismen im Boden: Dieses Handbuch wertet aktuelle Forschungsergebnisse auf diesem Gebiet kritisch aus und erläutert die Bedeutung der Zusammenhänge für Ökosysteme. Ein besonderer Schwerpunkt bildet die Wechselbeziehung zwischen Schadstoffen im Boden und Populationen von Mikroorganismen.
Book Synopsis Canadian Geography by : Thomas A. Rumney
Download or read book Canadian Geography written by Thomas A. Rumney and published by Scarecrow Press. This book was released on 2009-12-10 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt: Canadian Geography: A Scholarly Bibliography is a compendium of published works on geographical studies of Canada and its various provinces. It includes works on geographical studies of Canada as a whole, on multiple provinces, and on individual provinces. Works covered include books, monographs, atlases, book chapters, scholarly articles, dissertations, and theses. The contents are organized first by region into main chapters, and then each chapter is divided into sections: General Studies, Cultural and Social Geography, Economic Geography, Historical Geography, Physical Geography, Political Geography, and Urban Geography. Each section is further sub-divided into specific topics within each main subject. All known publications on the geographical studies of Canada—in English, French, and other languages—covering all types of geography are included in this bibliography. It is an essential resource for all researchers, students, teachers, and government officials needing information and references on the varied aspects of the environments and human geographies of Canada.
Book Synopsis Global Desertification by : J. F. Reynolds
Download or read book Global Desertification written by J. F. Reynolds and published by . This book was released on 2002 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Office of Endangered Species and International Activities Publisher : ISBN 13 : Total Pages :316 pages Book Rating :4.3/5 (121 download)
Book Synopsis Threatened Wildlife of the United States by : United States. Office of Endangered Species and International Activities
Download or read book Threatened Wildlife of the United States written by United States. Office of Endangered Species and International Activities and published by . This book was released on 1973 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Vegetation of South Africa, Lesotho and Swaziland by : M. C. Rutherford
Download or read book The Vegetation of South Africa, Lesotho and Swaziland written by M. C. Rutherford and published by . This book was released on 2006-01-01 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ecology and the Environment by : Russell K. Monson
Download or read book Ecology and the Environment written by Russell K. Monson and published by Springer. This book was released on 2014-10-02 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, plant biology is considered from the perspective of plants and their surrounding environment, including both biotic and abiotic interactions. The intended audience is undergraduate students in the middle or final phases of their programs of study. Topics are developed to provide a rudimentary understanding of how plant-environment interactions span multiple spatiotemporal scales, and how this rudimentary knowledge can be applied to understand the causes of ecosystem vulnerabilities in the face of global climate change and expansion of natural resource use by human societies. In all chapters connections are made from smaller to larger scales of ecological organization, providing a foundation for understanding plant ecology. Where relevant, environmental threats to ecological systems are identified and future research needs are discussed. As future generations take on the responsibility for managing ecosystem goods and services, one of the most effective resources that can be passed on is accumulated knowledge of how organisms, populations, species, communities and ecosystems function and interact across scales of organization. This book is intended to provide some of that knowledge, and hopefully provide those generations with the ability to avoid some of the catastrophic environmental mistakes that prior generations have made.
